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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./11_自定义封装promise.js"></script>
</head>
<body>
    <script>
        let p = new Promise((resolve,reject)=>{
            // throw 'err'
            // reject('err')
            // resolve('ok')
            setTimeout(()=>{
                resolve('ok')
            },1000)
        })
        console.log(p)
        p.then(value=>{
            console.log(value)
        },reason=>{
            console.log(reason)
        })
    </script>
</body>
</html>